Wikipedia Reference Information
Buenos Aires is the capital of Argentina and its largest city and port. It is located on the southern shore of the Río de la Plata (River Plate, the River of Silver), on the southeastern coast of the South American continent.
Strongly influenced by European culture, Buenos Aires is sometimes referred to as the "Paris of the South" or "Paris of South America".
After the internal conflicts of the 19th century, Buenos Aires was federalised and removed from Buenos Aires Province in 1880; its city limits were enlarged to include the former towns of Belgrano and Flores — both are now neighbourhoods in the city.
The complete, up-to-date and editable article about Buenos Aires can be found at Wikipedia: Buenos Aires